Answer:
The steps are made to overcome the negative effect of friction or to increase the friction in the mud.
Explanation:
The following step can be taken when the 4 wheels of our 4 wheeler stuck in the mud are:
(a) First put some sand or rock near the tires to increase the friction to overcome the slipping of tires.
(b) Try to reverse the car and stop and will try to accelerate in the forward direction.
(c) Use the rope, by which one end can be tie to the tree another to the car and then accelerate.
(d) Put some wooden blocks in between the tires which can help.
In a displacement versus time graph, the slope of the line at any point on the graph indicates the <em>magnitude of velocity</em>.
(It can't indicate velocity completely, because the graph shows nothing about the direction of the motion.)
3 bar. 1 bar normal air pressure and 2 bar for being 20 m underwater
The answer is: Diameter = d = 6.1 cm
Explanation:
Angular separation between the two stars = Q = 10^-5 rad.
Wavelength =λ= 500 * 10^-9 m
The smallest diameter = d = ?
As Q = 1.22*(λ/ d)
From this
d = 1.22*(λ/Q) --- (1)
Plug in the value in (1):
(1) => d = 1.22*((500*10^-9)/10^-5))
d = 0.061 m
d = 6.1 cm
Answer:
Explanation:
When the velocity of an object changes, it would experience an impulse. If the mass of the object stays the same, and that the object moves along a line, the value of the impulse would be:
, where
- is the mass of the object, and
- is the change in the velocity of the object.
On the other hand, the change in the object's velocity can be found with the equation:
.
Note that if is in and is in , the unit of would be .
<h3>a.</h3>
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<h3>b.</h3>
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<h3>c.</h3>
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<h3>d.</h3>
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Note that and are of opposite signs. The reason is that the object's velocity has changed direction in this period.
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